Go Back   Home > Forums > Amplifiers > Power Supplies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 27th July 2007, 11:05 PM   #1
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
Default Vreg identification

Found this one in a zip file on this forum:

Click the image to open in full size.

But cant find where now,anybody recognize it?
How much current can it take?Is it the LM317/337 that sets the limmit?
Is it tested.
__________________
Regards Åke
  Reply With Quote
Old 27th July 2007, 11:27 PM   #2
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Default Re: Vreg identification

Quote:
Originally posted by Ryssen
Found this one in a zip file on this forum:

.........................

But cant find where now,anybody recognize it?
How much current can it take?Is it the LM317/337 that sets the limmit?
Is it tested.

voltage is up to 1,25(1+R3/R1) , decreased little via 1E on output ;

shunt positioned darlington thingies on outputs are sort of cap multipliers,or shunt ripple eaters......... if you wish..........

current- LM317/337 boundaries........

I have no any further info- where ,when,tested or not.........
__________________
my Papa is smarter than your Nelson !
tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb ; Papatreasure
  Reply With Quote
Old 27th July 2007, 11:44 PM   #3
diyAudio Member
 
darkfenriz's Avatar
 
Join Date: Jun 2004
Location: Warsaw
ADJ pin seems no way referenced to ground, looks like mistake...
  Reply With Quote
Old 28th July 2007, 12:02 AM   #4
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
Yes,C3,C11 and D2 should be connected to R1,and adjust pin to ground.Same on the negative side.

ripple eaters......... sounds fine..
__________________
Regards Åke
  Reply With Quote
Old 28th July 2007, 04:20 AM   #5
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
When correcting the above errors in Eagle I saw the next one..the negative output at JP2 is only connected to pin 1 in JP1,not to the regulator.BTW in this schema you will have to use 2 LM317...
Just connect C18-negative to R16,will that work?
__________________
Regards Åke
  Reply With Quote
Old 28th July 2007, 03:44 PM   #6
diyAudio Member
 
darkfenriz's Avatar
 
Join Date: Jun 2004
Location: Warsaw
Yes, should work.
But such an errorous schematic is not a very good starting point for a good regulator, also wouldn't it be nicier to build a complementary regulator with xx337 and PNPs rather than going positive regulator mimic negative regulator?
I would not go to such tricks just because someone posted a schematic full of mistakes, he probably never built one.

regards
Adam
  Reply With Quote
Old 28th July 2007, 04:54 PM   #7
Khron is offline Khron  Romania
diyAudio Member
 
Join Date: Jul 2005
Location: Finland
Send a message via AIM to Khron Send a message via MSN to Khron Send a message via Yahoo to Khron
The general structure reminds me of CarlosFM's regulator for his Gainclone chipamps, using two LM338's. And i've seen that post-regulator somewhere else.

I found it: link

I think the circuit's intended to be used on a dual secondary transformer, hence the 4-pin input.
  Reply With Quote
Old 28th July 2007, 05:47 PM   #8
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
Quote:
also wouldn't it be nicier to build a complementary regulator with xx337 and PNPs rather than going positive regulator mimic negative regulator?
Yes,it would,if I could.. Will try to "mirror" the negative side in eagle.
__________________
Regards Åke
  Reply With Quote
Old 2nd August 2007, 10:02 AM   #9
diyAudio Member
 
Join Date: Jul 2003
Location: Dona paula, Goa
U should be able to do it but don't do it. Just mimic the positive regulator. It is better that way.
  Reply With Quote
Old 13th August 2007, 11:01 PM   #10
Ryssen is offline Ryssen  Sweden
diyAudio Member
 
Ryssen's Avatar
 
Join Date: Dec 2003
Location: Sweden--> Here
Quote:
Just mimic the positive regulator. It is better that way.
Yes,thats what I meant,sorry..
__________________
Regards Åke
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help with Cap identification SVinzant Parts 3 22nd January 2009 12:54 PM
Need identification if possible. es44 Full Range 2 11th September 2008 08:38 AM
Vreg vs CCS - basic Zen question m@ Pass Labs 1 13th January 2006 09:21 AM
Making series Vreg to sink current KasperM Solid State 1 30th November 2001 06:30 PM


New To Site? Need Help?

All times are GMT. The time now is 08:29 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2